Feed tip for lubricators



March 17, 1925.

T. w. CRANE FEED TIP FOR LUBRICATORS Original Filed Aug.. 50, 1922 INVENTOR i2: fiTCfana,

WITNESSES A TTORNE YS Patented Mar. 17, 1925.

. U NIT T A rAr THOMAS WILLIAM CRANE, or. IMr-nnmn,cnunonnral,

FEED rnai, ro-n LUBRIGAT0BS,.

To all whom it may concern:

Be it known that I, THOMAS: lVILnIAir CRANE, a citizen ofthe United States, residing-at Imperial, in the countyof 11nperial; State of, California, have inyented certain new and; useful Improvements in Feedz Tips for Lubricators, of which, the following is a specification.

This invention. relates. to irnnrovernents in feed ti ps7 for lubricators and it consists in the combinations, constructions and" arrangements herein described and claimed.

More specifically, the present; invention is a divisional; part of; that disclosed in my prior application for Letters Patent of, the United States, Serial No. 585,296, filed August 1922. a

An object; of the presentinventiouis to provide a novelieedtip of simpleconstruc- -tion which is. adapted for application to a lubricator attached to a rotating or oscil-o dating part and whichhas facilit es for con-' 7 trollingthe flow of alubricatingfluid therethrough to the bearing of: the part to which the luhricator is applied, whereby a determined quantity ofthe lubricating fluid will be fed tov the bearing during each operating movement of; the'part to which the lubricator is attached and the feeding of the Figure 1 is a perspective iew showing a lub-ricatorT equipped with the present; lllVfilTltion and applied: toia; supporting-part,

Figure 2 is a relatively 'enlargedvcentral vertical section through the structure exhibited inv Figure I, and

FigureS' is a section along the line 3- -3 ing 3 at oneend thereof andbeingprovided;

lubricating fluid torthe hearing will be disaccompanyv i an a w 1 ai s a at its other, end with acentral-boss iehayf ing an axial bore5 which constitu-tesfan-out let] or discharge opening for thelubricant container. The" lubricant container also inay-includean inner casingfi which is open at the endithereoi proximate to the out'let 5 andis provided" at its opposite end with an end wall 7 connected by integral web portions 8 so th at the innerv casing 6 will be held inispaced concentric relation to the outershe-ll 2, and a fillopening 9 through theend wall 7 will'be inalignnient with the fill opening 3. The fill openings?) and 9 have threaded walls and the fill opening 9is of lessarea thauthe fill opening 8 so that a screw plug l Oinay be inserted-through the fill opening 43 intoengagement with the fill opening '9 and a larger screw plug 11 then secured intthe fill opening 31 The inner casingfi terminates short offthe confronting end wall oli'the outer shell.

The boss l is provided with a counterbore 12 at the outerend of the bore 5; the walls of the counterbore being screw-threaded.

Theboss l also is proyided with a lateral opening 13 which extends transversely "thereinto from one side wall; thereof and intersects the bore 5., The lateral opening 13 does not extend through wall 01": the bossf The wall fof the opening 13 is screw threaded for engagement with the opposite a a screw plug 14; whichserves asa Valve-and may be manipulated tocontrolthe passage oi: a lubricating fluid from the container 1 through the bore 5. i

The boss 4: has the outer end portion thereofreduced in diainete'r at 15; and pro vided with external screw threads for engaging a tubulan nozzle 16, packing such Jas indicated at 17 preferably, bein'gjcompressed betweenthe shoulder 18 at" tlrdirinjen end of thereduced portion 15 andtheadjacent end thetnozzlellfio noz zletlti is provided with a screw-threaded end portion; 19 which is adapted for connection witl r. the internally screw-threaded inlet 20d of a bearingnto whichthe lubricant tolbe fed. The flreduced end; portion 19, of v the nozzle has a: bore 5 21 of restricted area, exelieshnethrwsl fle wanin charge opening through which lubricant may pass from the chamber or space 22 within the nozzle through the inlet 20.

The present invention is concerned primarily with the provision of a novel feed tip for controlling the flow of lubricant from the bore 5 into the chamber 22 of the nozzle, it, of course, being-understood that lubricant is permitted to pass along the bore 5 only when the valve 1 1 is in open position.

a tubular body 23 having a slightly enlarged externally screw-threaded end portion 24; adapted for connection with the counterbore 12; The tubular body 23 is open at its opposite ends and thefree end portion thereof is providedwith, a spiral v rib 25 which preferably is integral therewith and which suitable known manner, as by welding, to the inner wall of a cup-shaped shell or cap 26 which encompasses the free end portion of the body 23 and is disposed with the bottom wall thereof in spacedconfronting relation to the open free end of the body. 23, thus providing within the cap 26 a compartment or space 27 at the bottom thereof and at is secured in any the free; end of the body 23, which space communicates with the chamber within the nozzle 16 through a spiralpassage 28 which is defined by the spiral rib 25 in conpmction with the inner wall of the cap 26 and the outer wall of the portion of the tubular body 23 which is disposed within the cap.

From the foregoing description of the various parts of the device, the operation thereof may be readilyunderstood. The container 1 may be filled with a suitable lubricantwhich will flow'readily. This will be accomplished when thevcontainer isin K upright position since as hereinbefore stated,

the container is filled.

c a lubricator for use with carried by a rotating or oscillating part. It will also be understood that the valve lt will be in closed position when The valve 1i then is'opened and as the part to which the nozthe device is intended primarily zle 16 is attached'rotates, the lubricant which the bore 5 and the tubu has passed through lar body 23' into the space 27 of the cap 26 will pass through the spiral passage into the compartment 22 of the nozzle and thence 0 to the bearing of the otating or oscillating sequence,

the bearing W111 be regularly intermittent during rotation .of the part to which the and so arranged in respect part. Thespiral rib 25 is of such length to the tubular body passage will lie in different horizontal planes when the body 23 is inhorizontal position, whereby lubricant will pass through the spiral passage tational or oscillatory movement of the part to which the lubricator is attached. In conthe feeding of lubricating fluid to ugal force as The. feedtip embodying the invea. tion comprises the confronting walls of the municating at one end 23 that the opposite ends of the spiral only during part of the rcdevice is applied. It is desirable that the device he applied to a part rotating at a moderate speed or slackened in rotational speed at intervals in order that the feeding of the lubricating fluid to the bearing may not be detrimentally affected by centrifmight be the case were the part to rotate continuously-at high speed.

Obviously, the invention is susceptible of embodimentin forms other than that illustrated in the accompanying drawings and I, therefore, consider as my ownall modifications and adaptations thereof which fairly fall within the scope of the appended claims. v

I claim I 1. In a'device of the character described, the combinationwith a tubular outlet communicating at one end with a source of lubricating fiuid' supply, of a feed tip comprising a tubularbody secured at one end to the tubular outlet in open communication with the latter, a cap encompassing the'free end. portion of said tubular feed tip body, and means connecting said tubular feed tip body and said cap for holding the latter in spaced relation to the tubular feed tipbody and for providing a spiral passage between tip body and cap.

2. In a device of the character described, the combination with a tubular outlet comwith lubricating fluid supply, prising a tubular body secured adjacent to one end within the bore of the tubular outlet, said tubular feed tip body having a spiral rib on the outer wall thereof, a cap encompassing the free end portion of said feed tip body and secured to the peripheral walls of said spiral rib, whereby said cap will be spaced from said feed tip body and a spiral passage is provided between the confronting walls of the feed tip body and the cap thereon.

'3. In a device ofthe character described, the combination with a tubular outlet com- 'municating atone end with a source of lubricating fluid supply, of a feed tip comprising a tubular body secured adjacent to one end within the bore of the tubular outlet, said tubular body havinga spiral rib on the outer wall thereof, a cap encompassing the free end portion of said feed tip body and secured to the peripheral walls of said spiral rib,'whereby said cap will be spaced from said feed tip body and a spiral passage isprovided between the confronting walls of the feed tip body and the cap thereon, said spiral passage terminating at its opposite ends in different horizontal planes when the feed tip body is in horizontal position.

a. Ina device of the character described, a tubular outlet having a bore communicattubular feed a source of of a feed tip coming at one end With a source of lubricating fluid supply, a feed tip comprising a tubular body secured adjacent to one of its ends within the bore of said tubular outlet, said feed tip body having an integral spiral rib on the protruding portion thereof, and a cap encompassing the protruding portion of said feed tip body and being permanently attached to the spiral rib, said cap having the end Wall thereof disposed in spaced rela- 10 tion to the open end, of said feed tip body, thus providing a space Within the cap at the free end of the feed tip body and in communication through the spiral passage extending between the convolutions of the 15 rib with the space exterior of the cap.

THOMAS WILLIAM CRANE. 

